69975725 has 24 divisors (see below), whose sum is σ = 89572392. Its totient is φ = 54195200.

The previous prime is 69975721. The next prime is 69975733. The reversal of 69975725 is 52757996.

It can be written as a sum of positive squares in 12 ways, for example, as 29041321 + 40934404 = 5389^2 + 6398^2 .

It is not a de Polignac number, because 69975725 - 2² = 69975721 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (69975721) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 238679 + ... + 238971.

It is an arithmetic number, because the mean of its divisors is an integer number (3732183).

Almost surely, 2^69975725 is an apocalyptic number.

It is an amenable number.

69975725 is a deficient number, since it is larger than the sum of its proper divisors (19596667).

69975725 is a wasteful number, since it uses less digits than its factorization.

69975725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 577 (or 572 counting only the distinct ones).

The product of its digits is 1190700, while the sum is 50.

The square root of 69975725 is about 8365.1494308231. The cubic root of 69975725 is about 412.0808843773.

The spelling of 69975725 in words is "sixty-nine million, nine hundred seventy-five thousand, seven hundred twenty-five".